2 * FR-V MB93093 Power Management Routines
4 * Copyright (c) 2004 Red Hat, Inc.
6 * Written by: msalter@redhat.com
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License.
13 #include <linux/config.h>
14 #include <linux/init.h>
16 #include <linux/sched.h>
17 #include <linux/interrupt.h>
18 #include <linux/sysctl.h>
19 #include <linux/errno.h>
20 #include <linux/delay.h>
21 #include <asm/uaccess.h>
23 #include <asm/mb86943a.h>
27 static unsigned long imask;
29 * Setup interrupt masks, etc to enable wakeup by power switch
31 static void mb93093_power_switch_setup(void)
33 /* mask all but FPGA interrupt sources. */
34 imask = *(volatile unsigned long *)0xfeff9820;
35 *(volatile unsigned long *)0xfeff9820 = ~(1 << (IRQ_XIRQ2_LEVEL + 16)) & 0xfffe0000;
39 * Cleanup interrupt masks, etc after wakeup by power switch
41 static void mb93093_power_switch_cleanup(void)
43 *(volatile unsigned long *)0xfeff9820 = imask;
47 * Return non-zero if wakeup irq was caused by power switch
49 static int mb93093_power_switch_check(void)
55 * Initialize power interface
57 static int __init mb93093_pm_init(void)
59 __power_switch_wake_setup = mb93093_power_switch_setup;
60 __power_switch_wake_check = mb93093_power_switch_check;
61 __power_switch_wake_cleanup = mb93093_power_switch_cleanup;
65 __initcall(mb93093_pm_init);